Earbud



FIG. 1 is a right side perspective view of an earbud;

FIG. 2 is a side view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof; and,

FIG. 6 is a back view thereof.

CLAIM The ornamental design for an earbud, as shown and described.